1.8% is the change from 835 to 850
Calculation steps:
[( 850 - 835 ) ÷ 835] x 100 = 1.8%
Formula
Percentage change = [(850 - 835) / 835] x 100
Subtract the new number by the original number
850 - 835 = 15
15 ÷ 835 = 0.017964071856287425
0.017964071856287425 x 100 = 1.8%